Always pickle finger my focus attacks

using a tekken 6 fight stick on pretty much the default setting

a lot of the times i want to focus out of a move but i end up missing it because go to press those 2 buttons fast and my index finger doesn’t press lt down all the way. got any suggestions an maybe executing it better?
was thinking of moving my buttons over to the right or making one a focus attack but might make it tougher doing the ultras and junk. idk =p